exhaust set up question

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Nov 15, 2004 | 06:35 PM

ptsiu

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Joined: Sep 2002

Posts: 242

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From: Ames, IA, 50014

exhaust set up question

My ls has a DC 4-1 header and a K&N filter on it. I am wondering if putting a 2.5" piping catback would lose the torque. Please advice.

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